package com.itheima.stock.service.impl;

import com.itheima.stock.cache.Cache;
import com.itheima.stock.constant.Constants;
import com.itheima.stock.dto.LoginDTO;
import com.itheima.stock.entity.SysUser;
import com.itheima.stock.enums.CodeEnum;
import com.itheima.stock.exception.Exceptions;
import com.itheima.stock.mapper.SysUserMapper;
import com.itheima.stock.service.UserService;
import com.itheima.stock.util.IdWorkers;
import com.itheima.stock.util.RedisKeyUtil;
import com.itheima.stock.vo.CaptchaVO;
import com.itheima.stock.vo.LoginVO;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

/**
 * @author kaoM1Jy
 * @date 2025/11/9 21:19
 * @description:
 */
@Service
public class UserServiceImpl implements UserService {
    private final IdWorkers idWorkers;

    private final Cache cache;

    private static final int FOUR  = 4;

    @Autowired
    private SysUserMapper sysUserMapper;
    @Autowired
    private PasswordEncoder passwordEncoder;

    public UserServiceImpl(IdWorkers idWorkers, Cache cache) {
        this.idWorkers = idWorkers;
        this.cache = cache;
    }


    @Override
    public LoginVO login(LoginDTO dto) {
        if(ObjectUtils.isEmpty(dto)
                || ObjectUtils.isEmpty(dto.getUsername())
                || ObjectUtils.isEmpty(dto.getPassword())
                || ObjectUtils.isEmpty(dto.getCode())
                || ObjectUtils.isEmpty(dto.getRkey())){
            Exceptions.cast(CodeEnum.PARAM_IS_NOT_NULL);
        }
        String captchaInRedis = cache.get(dto.getRkey());
        if(!StringUtils.equals(captchaInRedis,dto.getCode())){
            Exceptions.cast(CodeEnum.SYSTEM_VERIFY_CODE_ERROR);
        }
        cache.remove(dto.getRkey());
        SysUser user=sysUserMapper.selectByUsername(dto.getUsername(),Constants.SYS_USER_STATUS_NORMAL,Constants.SYS_USER_UN_DELETE);

        if(ObjectUtils.isEmpty( user)&&!passwordEncoder.matches(dto.getPassword(),user.getPassword())){
            Exceptions.cast(CodeEnum.SYSTEM_USERNAME_NOT_EXISTS);
        }

        return LoginVO.builder()
                .id(user.getId())
                .username(user.getUsername())
                .nickName(user.getNickName())
                .phone(user.getPhone())
                .build();
    }


    @Override
    public CaptchaVO captcha() {
        String captcha = RandomStringUtils.randomNumeric(FOUR);
        String redisKey = RedisKeyUtil.generateKey(Constants.CAPTCHA_PREFIX, idWorkers.nextStrId());
        cache.set(redisKey,captcha,Constants.CAPTCHA_EXPIRE_TIME);

        return CaptchaVO.builder()
                .rkey(redisKey)
                .code(captcha)
                .build();
    }
}
